1 files changed, 4 insertions, 0 deletions

diff --git a/include/stdio.h b/include/stdio.h
index 372fd3e..cc16e46 100644
--- a/include/stdio.h
+++ b/include/stdio.h
@@ -47,6 +47,7 @@ _FORTIFY_FN(fgets) char *fgets(char * _FORTIFY_POS0 __s, int __n, FILE *__f)
         return __orig_fgets(__s, __n, __f);
 }
 
+__access(write_only, 1)
 _FORTIFY_FN(fread) size_t fread(void * _FORTIFY_POS0 __d, size_t __n,
                                 size_t __m, FILE *__f)
 {
@@ -59,6 +60,7 @@ _FORTIFY_FN(fread) size_t fread(void * _FORTIFY_POS0 __d, size_t __n,
         return __orig_fread(__d, __n, __m, __f);
 }
 
+__access(read_only, 1)
 _FORTIFY_FN(fwrite) size_t fwrite(const void * _FORTIFY_POS0 __d, size_t __n,
                                   size_t __m, FILE *__f)
 {
@@ -71,6 +73,7 @@ _FORTIFY_FN(fwrite) size_t fwrite(const void * _FORTIFY_POS0 __d, size_t __n,
         return __orig_fwrite(__d, __n, __m, __f);
 }
 
+__access(read_write, 1, 2)
 _FORTIFY_FN(vsnprintf) int vsnprintf(char * _FORTIFY_POS0 __s, size_t __n,
                                      const char *__f, __builtin_va_list __v)
 {
@@ -112,6 +115,7 @@ _FORTIFY_FN(vsprintf) int vsprintf(char * _FORTIFY_POS0 __s, const char *__f,
  * 3) not implementing these under clang, which is what we do for now
  */
 
+__access(read_write, 1, 2)
 _FORTIFY_FN(snprintf) int snprintf(char *__s, size_t __n,
                                     const char *__f, ...)
 {